Some further thoughts concerning the 24 mm. Potchefstroom, Pretoria and Rustenburg datestamps
Author: Drysdall, A.R. Dickson, J. and Wingent, P., (pg. 86-7)
Published in: Volume 31, Issue 3, pg. 77-110, 1996
Published in: Volume 31, Issue 3, pg. 77-110, 1996